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| | Hi all, In the context of Ethernet in the first mile , when do I use an ONU and when to use an ONT...as far as I know both will convert singnals and output electronic signals to be trasmitted over copper. am I right? |
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| amro.mash (3/30/2009)
Hi all, In the context of Ethernet in the first mile , when do I use an ONU and when to use an ONT...as far as I know both will convert singnals and output electronic signals to be trasmitted over copper. am I right? Amro, I didn't know, so you prompted me to do some searching. According to the always reliable (right?) Wikipedia the two terms mean the same thing... "A device called an optical network terminal (ONT), also called an optical network unit (ONU), converts the optical signal into an electrical signal. (ONT is an ITU-T term, whereas ONU is an IEEE term, but the two terms mean exactly the same thing.) " Doug
Doug Weis, RCDD, ESSdoug.weis@hei-eng.com |
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| | As Doug says I agree that they mean the same thing - refering to IEEE and ITU terms. I have been involved in GPON deployment for some time and have found that the term ONU is usually used to denote the small residential units with a few ports (say a couple of POTS ports and a few more FE ports for High Speed Internet, IPTV etc.) The term ONT is used to denote the ones with larger port counts (including E1 ports and GE ports), serving bussinesses, MDUs etc. This opinion is based on the usage of the terms I have seen being used. Yehiya, RCDD |
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